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Threading Taps |
 Wrought aluminium alloys Si = 6÷10 %(long-chipping) |
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DIN 371  AC144A 144A DL144A |
DIN 376 - 374 - 5156  AC144 144 DL144 |
COATING    |
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 ≤ 2 x d1  |
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Machine tap with 38º right-hand spiral flutes, driving the chips to the back, increased flute length. Threaded length: 10 threads. Starting from the 5th thread, back tapered thread portion to reduce friction and improve swarf clearance. Lead chamfer 2.5 threads (DIN-Form C). Rake angle 14º÷16º. |
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